I'm simply blown away by the performance of this device. The cartridges don't have sharp barbs like the Dr. Pens. It contains a microprocessor and a powerful, super-fast actuator that accellerates so quickly that the needling is nearly painless because the needles are such a short time inside the skin. This extremely short needle-down cycle prevents microtearing. Microtearing is a problem with all other devices ans I can confirm this having used cheap Chinese pens. Another unique feature is that it is digitally set to needle at a certain depth. This has many advantages: Depth adjustment on other devices means using a magnifying glass to read the tiny lettering on a dial or discern a raised depth indication molded into an adapter piece. It's time consuming and cumbersome to depth-adjust those machines, which discourages working with the optimal needling depth at all times. Continuous, sensor-feedback-controlled needling depth means correct, uniform needling, giving superior results compared to manual needling, which often goes too shallow or not uniformly deep.
Other advantages:
Minimal pain due to very short duty-cycle. The needles are only in the skin for a few milliseconds meaning I don't have to numb. Cheap Chinese machines tear up the skin. Another advantage is
Reduced swelling
Reduced bleeding (or no bleeding at all) compared to other electric needling devices at shallower depths, due to no microtearing. At deeper depths, significant bleeding can occur due to the max. 2.25 mm penetration, which other devices advertize but in reality do not achieve. For optimal treatment of serious scar tissue, bleeding is highly desirable to bring growth factors and nutrients into the "open" skin. Devices that do not cause at least pinpoint bleeding at the deeper depths on at least thinner skin have an insufficiently weak motor. The slim "pen"-type devices are based on Chinese permanent makeup machines.
Reduced healing time
Easier psychologically (the machine needles the skin vs. you doing it)
Very powerful motor. The device really penetrates the depth it is set to, which is usually not the case with similar devices because those devices are based on existing permanent-makeup hardware.
No microtearing. The short duty cycle also avoids horizontal tearing. "Microtearing" can cause pain and bleeding and we think it could enlarge facial pores in susceptible people, when a pore's edge is torn.
These are the reasons I find the Derminator 2 superior to the Dr. Pens.
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